Quantum confinement effect of two-dimensional all-inorganic halide perovskites

被引：44

作者：

Cai, Bo ^{[1
]}

Li, Xiaoming ^{[1
]}

Gu, Yu ^{[1
]}

Harb, Moussab ^{[2
]}

Li, Jianhai ^{[1
]}

Xie, Meiqiu ^{[1
]}

Cao, Fei ^{[1
]}

Song, Jizhong ^{[1
]}

Zhang, Shengli ^{[1
]}

Cavallo, Luigi ^{[2
]}

Zeng, Haibo ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, Inst Optoelect & Nanomat, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Jiangsu, Peoples R China

[2] King Abdullah Univ Sci & Technol, KAUST Catalysis Ctr, Phys Sci & Engn Div PSE, Thuwal 239556900, Saudi Arabia

来源：

SCIENCE CHINA-MATERIALS | 2017年 / 60卷 / 09期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

quantum confinement effect; all-inorganic halide perovskites; nanoplates; temperature dependence luminescence; CESIUM LEAD HALIDE; TEMPERATURE-DEPENDENCE; SOLAR-CELLS; PHOTOLUMINESCENCE; NANOPLATELETS; NANOCRYSTALS; MONOLAYER; EMISSION; LENGTHS; CSPBX3;

D O I：

10.1007/s40843-017-9090-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quantum confinement effect (QCE), an essential physical phenomenon of semiconductors when the size becomes comparable to the exciton Bohr radius, typically results in quite different physical properties of low-dimensional materials from their bulk counterparts and can be exploited to enhance the device performance in various optoelectronic applications. Here, taking CsPbBr3 as an example, we reported QCE in all-inorganic halide perovskite in two-dimensional (2D) nanoplates. Blue shifts in optical absorption and photoluminescence spectra were found to be stronger in thinner nanoplates than that in thicker nanoplates, whose thickness lowered below similar to 7 nm. The exciton binding energy results showed similar trend as that obtained for the optical absorption and photoluminescence. Meanwile, the function of integrated intensity and full width at half maximum and temperature also showed similar results, further supporting our conclusions. The results displayed the QCE in all-inorganic halide perovskite nanoplates and helped to design the all-inorganic halide perovskites with desired optical properties.

引用

页码：811 / 818

页数：8

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